James Francis Armstrong (April 3, 1750 – January 19, 1816) was a chaplain from New Jersey in the American Revolutionary War and a Presbyterian minister for 30 years in Trenton, New Jersey.
Armstrong graduated in 1773 with future notables such as Henry Lee, Morgan Lewis, and Aaron Ogden.
He was preparing to enter the ministry in New Brunswick in 1776, but the arrival of the British Army in New Jersey disrupted those plans.
Armstrong took up a musket and served as a private in the New Jersey militia, but he was soon thereafter ordained a minister and obtained a post as a regimental chaplain in the Continental Army.
After the war, he served from 1782 to 1783 as pastor at the church in Elizabeth, New Jersey, a position that had become vacant following the murder of the Rev.